Fix links to the New BSD License in meta-data

The "New BSD License" is the "3-Clause BSD License", but the links were
pointing to the "2-Clause BSD License".

java/pom.xml

diff --git a/java/pom.xml b/java/pom.xml
index 41c9b9d..0257cf5 100644
--- a/java/pom.xml
+++ b/java/pom.xml
@@ -40,7 +40,7 @@
   <licenses>
     <license>
       <name>New BSD license</name>
-      <url>http://www.opensource.org/licenses/bsd-license.php</url>
+      <url>https://opensource.org/licenses/BSD-3-Clause</url>
       <distribution>repo</distribution>
     </license>
   </licenses>